Elevator



G. KAESTNER.

(No Model.)

-ELEIVATOR.

No. 247,655. Patented Sept. 27,1881.

Maw W UNITED STATES PATENT OFFICE.

CHARLES KAESTNER, or CHICAGO, ILLINOIS.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 247,655, datedSeptember 2'7, 1881.

w Application filed July 21, 1881. (No model.)

To all whom it may concern:

Be it known that I, CHARLES KAESTNER, of Chicago, in the county of Cookand State of Illinois, have invented a certain new and usefulImprovement in Elevators, of which the following is a specification.

The nature of my invention relates to that class of elevators in which aseries of buckets will alternately pick up or fill on a lower floor withmaterial that is elevated and dumped on a higher floor, and moreparticularly to elevators of that kind in which the buckets are securedbetween two parallel endless chains thatare stretchedoversprocket-wheels rotated by any suitable motor.

The object of my invention is to provide means that will prevent thedumping or scattering of any material thus hoisted before the bucketshave reached the position intended for their dischargethat is, the pointwhere the downward motion commences. For such elevators twosprocket-wheels are mounted upon the upper shaft at the proper distanceapart. The space between these wheels was, however, heretofore leftopen. When, particularly with hoisting water or wet material, thebuckets commenced to discharge as soon as they had to follow theperiphery of the upper sprocketwheels, certain portions of the water orother material was precipitated in the space between the twochain-lines,which became a great nuisance and caused a waste of powerand material. To overcome thisdifticulty 1 interpose between the twosprocket-wheels a pulley or drum, the edges of which form close jointswith the rims of said sprocket-wheels, and which will prevent anymaterial from falling from the buckets into the space between the chainsor pulley, and for hoisting wet material or liquid of any sort I providethe drum on its face with a series of longitudinal radial ribs, thatwill come to stand behind and under said buckets, and while the wheelsare turnin g these ribs will raise to an incline upon the face of thedrum correspondent with the inclination of the bucket, and while thus onthe upper periphery they will'form receptacles for anymaterial splashedoutof the buckets,which material they will deliver at about the samepoint where the buckets will dump their entire loads.

In the accompanin g drawings, forming a part hereof, Figure 1 representsa longitudinal vertical section of an elevatorhaving my improvements;Fig. 2, a transverse section through the center of the sprocket-wheelsand the intermediate drum. Fig. 3 is a sectional plan of a bucket asattached to the chain-links, and Fig. 4 a transverse section of thesame.

Like letters designate corresponding parts in all the figures.

A denotes the uppershaft, rotated by any suitable motor, and B B are thetwo sprocketwheels rigidly mounted upon said shaft at the requisitedistance apart.

0 is the intermediate drum, also mounted upon shaft A, and forming atits rim-edges a close joint with the rims of the two sprocketwheels B B.gitudinal ribs, 0, that are radially projecting from the face of thedrum, and are equally distributed aroundthe periphery of the said drum.

D D are two parallel chains, which may be of the Ewart or any othersuitable pattern, and between or upon opposite links of the chains aresecured the buckets E E. J The elevator may be placed on a more or lessincline, when the chains on the side, where they move upward, may besupported and guided upon planks f, secured upon cross-ties g, that areframed between uprights G.

The elevated material, by its gravity and by the centrifugal force, willbe dumped from the buckets at an angle that varies with the speed of thesprocket-wheels, and that will dump it into a receptacle placed at aproper position in front of the buckets below the level of the shaft A,and the material splashed or overrunnin g from the buckets while thesame are carried over the wheel, that would be otherwise precipitated inthe space between the.

two chain-lines movingin opposite directions, will be collected andconveyed by the ribs on the drum, and will be dumped in the same manneras by the buckets, and into the same receptacle, thereby insuring apositive and economical operation.

This device is applicable as well for a single-chain elevator carryingbuckets, when rimextensions could be cast to each side of thesprocket-wheel, with radially-projecting ribs upon their faces, thatwill catch any material This drum 0 has a series of lonsplashing fromthe buckets, and convey and dump it in the same manner as when appliedto a double-chain elevator.

What I claim as my invention is-- 5 1. The combination of the sprocketwheels B B, endless-chain elevator D D, and buckets E, and the drum orpulley adapted to 0ceupy the entire space between said sprocketwheels,substantially as and for the purpose :0 set forth.

2. The combination, with the sprocketwheels, ehain-elevat0r, andbuckets, of a drum or pulley, 0, having upon its periphery thelongitudinal radial ribs a, substantially as and 15 for the purpose setforth.

3. In an elevator, the combination, with the buckets E, secured betweenendless chains 1) D, and driven by sprocket-wheels B B, that are mountedupon a shaft, A, of a drum, 0, provided upon its periphery withlongitudinal 2o radial ribs 0, and oeeupyingthe space between saidsprocket-wheels B B, all substantially as and for the purpose describedand shown.

CHARLES KAESTNER.

Witnesses F. W. KASEHAGEN, E. H. FROMMANN.

